TPS3511DR Equivalent & Substitute Parts

Part Overview

The TPS3511DR is a multi-voltage supervisor IC from Texas Instruments designed for power management applications. This device monitors three independent voltage channels with fixed thresholds (3.3V, 5V, 12V) and provides active-low reset output via open drain or open collector configuration. The part is currently in Last Time Buy status, indicating end-of-life transition. Identifying equivalent and substitute components is necessary to ensure design continuity and support long-term product availability for applications requiring multi-channel voltage supervision.

Substiute Parts

TPS3511DR

Texas InstrumentsIn Stock: 4278TPS3511DR Datasheet

Current PartRFQ

TPS3808G01DBVR

Texas InstrumentsIn Stock: 120351TPS3808G01DBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS3511DR is constrained by its specific multi-channel architecture and fixed voltage threshold configuration. The primary substitute identified is the TPS3808G01DBVR, a single-channel supervisor from Texas Instruments. This substitution is valid only under specific application conditions:

Key substitution criteria:

• Output type compatibility: Both devices provide open drain or open collector output with active-low reset logic
• Manufacturer alignment: Both are Texas Instruments products, ensuring consistent design philosophy and reliability standards
• Reset timeout functionality: Both devices incorporate reset timeout mechanisms
• Surface mount packaging: Both use surface mount technology for PCB integration
• Compliance standards: Both meet ROHS3, REACH, and identical ECCN/HTSUS classifications

Critical limitation: The TPS3808G01DBVR monitors only one voltage channel with adjustable/selectable thresholds, whereas the TPS3511DR monitors three fixed-threshold channels. This substitution requires application-level redesign if all three voltage monitoring functions are essential to system operation.

Parameter Comparison

Engineering Selection Recommendations

The TPS3808G01DBVR is suitable as a substitute for the TPS3511DR only when application requirements align with the following conditions:

Applicable scenarios:

• Single voltage channel monitoring is sufficient for system operation
• Adjustable voltage thresholds provide design flexibility for the monitored channel
• Adjustable reset timeout meets system requirements
• PCB redesign to accommodate SOT-23-6 package footprint is feasible
• Extended operating temperature range (-40°C to 125°C) is beneficial or required

Not applicable scenarios:

• Applications requiring simultaneous monitoring of three independent voltage channels
• Designs with fixed 3.3V, 5V, and 12V threshold requirements that cannot be modified
• Space-constrained layouts where 8-SOIC to SOT-23-6 package transition is not viable
• Systems where the 100ms fixed reset timeout is a critical specification

The TPS3808G01DBVR's active product status and extended temperature range provide advantages for new designs or long-term supply chain planning. Both devices maintain identical compliance certifications (ROHS3, REACH, EAR99) and MSL ratings, ensuring regulatory and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can the TPS3808G01DBVR directly replace the TPS3511DR without circuit modifications?

A: No. The TPS3808G01DBVR is a single-channel supervisor, while the TPS3511DR monitors three channels. Direct replacement requires application-level redesign if all three voltage monitoring functions are necessary. Pin-to-pin compatibility does not exist due to different package types (8-SOIC vs. SOT-23-6).

Q: What are the main functional differences between these two devices?

A: The TPS3511DR provides fixed-threshold monitoring of three voltage channels (3.3V, 5V, 12V) with a 100ms minimum reset timeout. The TPS3808G01DBVR monitors one voltage channel with adjustable thresholds and adjustable reset timeout. The TPS3808G01DBVR also supports a wider operating temperature range (-40°C to 125°C versus -40°C to 85°C).

Q: Are both devices RoHS and REACH compliant?

A: Yes. Both the TPS3511DR and TPS3808G01DBVR are ROHS3 compliant and REACH unaffected. Both carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the significance of the TPS3511DR's Last Time Buy status?

A: Last Time Buy status indicates the manufacturer is discontinuing this product. Existing inventory may be available for a limited period, but long-term supply cannot be guaranteed. Planning for alternative components is recommended for designs with extended production lifecycles.

Q: Can the adjustable thresholds of the TPS3808G01DBVR replicate the fixed 3.3V, 5V, and 12V thresholds of the TPS3511DR?

A: The TPS3808G01DBVR can be configured to match individual threshold values through external component selection. However, it monitors only one channel at a time, so simultaneous monitoring of all three thresholds would require multiple TPS3808G01DBVR devices.

Q: What packaging considerations apply when substituting these parts?

A: The TPS3511DR uses 8-SOIC packaging (0.154", 3.90mm width), while the TPS3808G01DBVR uses SOT-23-6 packaging. PCB layout and footprint redesign are necessary. The SOT-23-6 package is smaller, which may provide space savings in some applications.

Q: Are the output characteristics identical between these devices?

A: Both devices provide open drain or open collector output with active-low reset logic. Output drive capability and leakage specifications should be verified in the respective datasheets to ensure compatibility with downstream circuitry.